A few months ago I purchased a cherry wood dining room set from universal. Because of my cat, I covered the table for about a week with a piece of light weight plastic. When I took off the piece of plastic about a week later the table had a film on it, almost like water stains. I polished the table with Pledge, they disappeared for only a day. A few days later my husband polished the furniture using a little more elbow grease, again the marks were gone but for only a day. I am afraid I have ruined a beautiful table. Is there anything else I can polish the table with that might get rid of the stains?